oil level can be checked (>>> "Axis position for checking the fill level
on A4" Page 209).
2. Clean both M18x1.5 magnetic screw plugs and check the sealing ele-
ment; exchange magnetic screw plugs if damaged (>>> Fig. 8-11).
3. Connect the oil pump to the oil filler hole.
4. Fill the amount of oil from below up to the lower edge of the inspec-
tion hole = vent hole.
5. Insert and tighten the M18x1.5 magnetic screw plug; M
A
= 20 Nm.
6. Remove the oil pump.
7. Insert and tighten the M18x1.5 magnetic screw plug; M
A
= 20 Nm.
Axis position for checking the fill level on A4
Model Fill level Axis position
KR 30/50/70 R2100
KR 50 R2500
KR 50 R2500 F
KR 70 R2100 F
A4 A2 + A3 = -68 °
Fig. 8-11: Filling gear unit A4 with gear oil
1 Inspection hole = vent hole with M18x1.5 magnetic screw plug
2 Oil filler hole with M18x1.5 magnetic screw plug
3 Oil pump
8.6.3 Concluding work
The following concluding work must be carried out:
• Remove oil residue.
KR IONTEC
MA KR IONTEC V4 | Issued: 11.05.2021 www.kuka.com | 209/344
Maintenance
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